Can't get kickstart install working

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I want to install Fedora 14 (yes, I know its' obsolete. Soon I'll move up to F17) from the DVD using a kickstart file on a USB stick. I followed the instructions in this post:
http://forums.fedoraforum.org/archiv.../t-235489.html
When I boot the machine, it starts out as if it's going to work. It appears to access the USB stick on /sdb1 and starts anaconda. It gets as far as a screen that says "Examining storage devices" and then stops with "install exited abnormally". There's a 20-call stack backtrace, 10 of which are from /lib/libparted.so.0 and the other 10 are
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